Researchers have struck back at the operators of the CryptoLocker ransom trojan that has held hundreds of thousands of hard drives hostage, the researchers managed to recover the private encryption keys that CryptoLocker uses to lock victims’ personal computer files until they pay a $300 ransom. Thanks to the security experts, an online portal has been created where victims can get the key for free.

To use the free service, victims must upload one of the files encrypted by CryptoLocker along with the e-mail address where they want the secret key delivered. They will then email you a master decryption key along with a download link to their recovery program that can be used together with the master decryption key to repair all encrypted files on your system.